Desktop power supply not ready for modern hardware

Dec 22, 2025 - 7:26 AM

https://megagrass.com/community/question-and-answer/forums/4133/topics/3050252 COPY
  • Mille Kentk
    Mille Kentk
    Mille Kentk
    Mille Kentk Dec 22, 2025 - 7:26 AM

    After upgrading CPU and GPU, my PC wouldn’t start. The old PSU was too weak. How do you know when a desktop power supply must be replaced for new components?

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  • Andrew Brooks
    Andrew Brooks
    Andrew Brooks
    Andrew Brooks Dec 22, 2025 - 2:07 PM

    You know your Desktop power supply needs replacement for new components if the total system wattage exceeds its rating-use calculators like OuterVision or Newegg's to estimate (add 20% headroom for spikes). Signs include no boot, random shutdowns under load, crashes, or lacking modern connectors (e.g., 12VHPWR for new GPUs). Always check efficiency and quality. For upgrades, explore reliable options at https://www.365powersupply.com/ .

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